ul{
    margin:0;
    padding: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    display: flex;
}
ul li{
    display: flex;
    flex-direction: column;
    margin: 0 5px;
    white-space: nowrap;   /**不折行**/
}

::-webkit-scrollbar{
    display: none;
}

a{
    text-decoration: none;
}

.active{
    color:red;
}

.indicator{
    background-color: brown;
    height: 2px;
    width: 2rem;
    margin-top: 2px;
}
